Vouchernaut MCP server

Which MCP servers are Vouchernaut's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-27

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Whose server it is

Registry namecom.vouchernaut/dealsverified in the MCP registry

The registry name sits under vouchernaut.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-27

Stateanswerschecked 2026-10-27
Tools17
Server calls itselfvouchernaut
Server version1.0.0
Protocol version2025-06-18

On 2026-10-27 the server answered initialize and tools/list without a sign-in. First answer in 200 ms.

Should an agent connect itConnect it, with care

Its tools do Find discount codes that work at UK shops; Check whether a product's price has really dropped, but not Compare broadband availability for a home postcode.

Once connected

For "Check whether a product's price has really dropped", the likely first call is check_deal.
Parameters are untyped or undescribed in 5 of 17 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 7, the first on 2026-10-27

INITE MCP score88 of 100answers 100 · does the job 67 · definitions 95 · context 85 · connects 100
What an agent can do with it2 of 3 use cases
Answered100% of days7 of 7 daily checks
Median first answer254 ms
Space in an agent's context≈ 5,296 tokensthe definitions of all its tools (17), which an agent carries on every turn
Tool definitionsA · 95 of 100
Typed results2 of 17 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 5 of 17

What an agent can do with it

can do · Find discount codes that work at UK shops
can do · Check whether a product's price has really dropped
cannot · Compare broadband availability for a home postcode

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers17 tools · read 2026-10-27

search_stores
Search the UK stores Vouchernaut lists by name or category ("flowers", "Currys", "phone cases"). Each store comes with how many live codes and deals it has, its best few offers with tracked links (each code itself only where the brand has…
get_store_offers
Every live discount code and deal Vouchernaut lists for one UK store, in the order its store page shows them: what each saves, its terms and end date, how many shoppers said it worked or failed, and a link that opens the store with the…
search_products
Search the products UK stores sell through Vouchernaut (flowers, gifts, hampers, candles, homeware and more): title, store, price, the price after the store's best discount code, honest price-history notes ("Down from", "Lowest in 90…
get_product
One product, by its `ref` ("<store>/<product>") or its vouchernaut.com page: every variant's price and stock, the store's best discount code that covers it and the price after it (the code itself only where the brand has approved AI…
price_drops
Products across UK stores whose price fell in the last 30 days from a price the store had held for at least 28 days, biggest fall first. Each comes with the old and new price and a tracked link. Narrow by search words, product type, store…
check_deal
Whether a product's price at a UK shop is a real deal, from Vouchernaut's own record of that shop's prices: pass a product page link from the shop, a barcode, a product's name or a `ref` ("<store>/<product>"). Gives the verdict on today's…
find_phone_deals
Every deal UK retailers list for one phone on Vouchernaut's phone finder: monthly price with its upfront cost, contract length, total cost over the contract with announced price rises included (and each rise in pounds and month), data…
sim_only_deals
SIM-only plans UK retailers list on Vouchernaut: monthly price with upfront cost, contract length, total cost with announced price rises included, data, network and seller, with a tracked link. Filter by data, budget, network and contract…
whats_on
Gigs, comedy, theatre, festivals, exhibitions and things to do in about 90 UK places, from ticket and experience sellers: title, date and time, venue and address, the lowest price where the seller's price includes its fees, and a tracked…
airport_parking
Car parks UK parking providers sell at the UK's main airports: meet and greet, park and ride and on-airport, with transfer times, terminals, Safer Parking status, compulsory charges on the day and, for given drop-off and pick-up times…
get_poll_result
Results of Vouchernaut's reader polls (UK shoppers answering short questions in its guides): the question, each answer's votes and share, and the poll's page to cite. Shares are quotable ("one in three readers") only once a poll has 100…
find_software
Software and AI tools Vouchernaut covers (AI assistants, meeting notes, dictation, website builders, email marketing and more): price, free plan, trial, platforms, review scores and any live deal, with each tool's vouchernaut.com page…
calculate_take_home_pay
What a UK employee's pay comes to after income tax, National Insurance (category A), student loan and a workplace pension, for the current tax year, by the year, month and week, with each tax band, the sources and a link to the worked…
student_loan_repayments
What a UK student loan costs a month now, and whether it's cleared or written off first: a month-by-month projection to the plan's write-off on stated assumptions (pay rises and RPI, which the caller may change), with this year's…
check_refund_rights
The UK consumer rights that apply to something bought (faulty, not arrived, poor service or a change of mind), strongest first, each with its last day as a date and the law it comes from (Consumer Rights Act 2015, Consumer Contracts…
search
Search Vouchernaut, a UK shopping guide: stores with discount codes, products and their prices, phones on its phone finder, and its buying guides. Each result has an id, a title and its page's URL.
fetch
The full text of one result from search: a store's live codes and deals with their links, a product's price and code (a code itself only where the brand has approved AI assistants, else the store's vouchernaut.com page), a phone's deals…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "deals": {
      "type": "http",
      "url": "https://vouchernaut.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http vouchernaut https://vouchernaut.com/mcp

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://vouchernaut.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.